Aries-everything is dark and black
Taurus-there isn't a theme, it's just a mess
Gemini-tried to be cool but there's just fandom posters everywhere sorry
Cancer-posters of their favorite bands and singers, the room is kept neat and they never seem to have dirty laundry somehow
Leo-light pink, has Christmas lights like all those Tumblr rooms
Virgo-pastel colors
Libra-messy except they have a TV and a laptop that they're always on and there's a tiny clear space by those
Scorpio-neat room with space and galaxy stuff, like he bedspread
Sagittarius-hangs pictures of their friends everywhere
Capricorn-everything is white and clean
Aquarius-blue
Pisces-underwater, beach, fishes